public async Task <Result <bool> > DeleteUploadAsync(string username, int id, string ipAddress, int failureCount)
{
var result = false;
// Escape condition for recursive call if exception is thrown.
if (failureCount >= Constants.OperationRetry)
{
return(SystemUtilityService.CreateResult(Constants.UploadDeletionFailedMessage, result, true));
}
try
{
result = await _uploadService.DeleteUploadsAsync(new List <int>() { id }).ConfigureAwait(false);
}
catch (Exception ex)
{
// Log exception.
await _loggingManager.LogAsync(DateTime.UtcNow.ToString(Constants.LoggingFormatString),
Constants.DeleteUploadOperation, username, ipAddress, ex.ToString()).ConfigureAwait(false);
// Recursively retry the operation until the maximum amount of retries is reached.
await ContinueUploadProgressAsync(username, id, ipAddress, ++failureCount).ConfigureAwait(false);
}
// Log the fact that the operation was successful.
await _loggingManager.LogAsync(DateTime.UtcNow.ToString(Constants.LoggingFormatString),
Constants.DeleteUploadOperation, username, ipAddress).ConfigureAwait(false);
return(SystemUtilityService.CreateResult(Constants.UploadDeletionSuccessMessage, result, false));
}
/// <summary>
/// Delete an upload and perform business logic to check for user existence and permission.
/// Retries operation when there is an exception and logs all actions.
/// </summary>
/// <param name="ids">Ids of uploads to delete.</param>
/// <param name="performingUser">User that is trying to delete the upload.</param>
/// <param name="ipAddress">Ipaddress for logging.</param>
/// <param name="failureCount">Current failure count of the operation.</param>
/// <param name="ex">Exception that is thrown.</param>
/// <returns>bool that represents whether the operation passed.</returns>
public async Task <bool> DeleteUploadsAsync(List <int> ids, string performingUser, string ipAddress, int failureCount, Exception ex)
{
// Escape condition for recursive call if exception is thrown.
if (failureCount >= Constants.OperationRetry)
{
throw ex;
}
// Condition to return.
bool deleteResult = false;
try
{
// Check that the user exists.
var userExists = await _userManagementService.CheckUserExistenceAsync(performingUser).ConfigureAwait(false);
if (!userExists)
{
throw new ArgumentException(Constants.UsernameDNE);
}
// Check that all the Ids exists.
if (!await _uploadService.CheckUploadsExistenceAsync(ids).ConfigureAwait(false))
{
throw new ArgumentException(Constants.UploadIdsDNE);
}
// Get user type.
var userType = await _userManagementService.GetUserTypeAsync(performingUser).ConfigureAwait(false);
// Check is user is admin. if true then let him perform
if (userType.Equals(Constants.AdminUserType))
{
// Let execution continue.
}
else if (userType.Equals(Constants.CustomerUserType) || userType.Equals(Constants.StoreOwnerUserType))
{
// Check if use is allowed to perform operation
if (!await _uploadService.CheckUploadOwnerAsync(ids, performingUser).ConfigureAwait(false))
{
throw new NotAuthorizedException(Constants.UserNotAllowed);
}
}
else
{
throw new NotAuthorizedException(Constants.UserNotAllowed);
}
// Perform operation.
deleteResult = await _uploadService.DeleteUploadsAsync(ids).ConfigureAwait(false);
}
catch (Exception e)
{
// Log everytime we catch an exception.
await _loggingManager.LogAsync(DateTime.UtcNow.ToString(Constants.LoggingFormatString),
Constants.DeleteUploadOperation, performingUser, ipAddress, e.ToString()).ConfigureAwait(false);
// Retry operation Constant.OperationRetry amount of times when there is exception
await DeleteUploadsAsync(ids, performingUser, ipAddress, ++failureCount, e).ConfigureAwait(false);
}
// Log the successful operations.
await _loggingManager.LogAsync(DateTime.UtcNow.ToString(Constants.LoggingFormatString),
Constants.DeleteUploadOperation, performingUser, ipAddress).ConfigureAwait(false);
return(deleteResult);
}